ACROSS
1A1AWolf in winter clothing (5)[-----]. Double def.
4A4A"Sprightly but delicate", exiled priest (5)[-----]. priest = FR, removed from delicate = FRAGILE
8A8ALegs, etc. just not open to everyone! (7, 4)[-----------]. Legs, etc. = MEMBERS, just = ONLY
9A9APluck garlic, to be taken at regular intervals (starting today) (4)[----]. "Garlic" to be taken at regular intervals = GRI; starting "today" = T
10A10ACurse, etc. rotten fruit (6)[------] Curse = EFF; anag. ETC
12A12AMovie maniac! (6)[------]. Double def
14A14ASpirits surround one: narrow the gap (4)[----]. spirits = GIN, enclosing one = A
16A16A"Free donuts?" -- Sounds like that was a hit! (5, 6)[-----------]. "Free donuts" homophone = BAKER'S TREAT
18A18APoints at tuber's unfriendly acquaintance (5)[-----]. Points = E, NE + tuber's = MY
19A19ASwing the lamps, when this is sung (5)[-----]. anag. LAMPS
2D2DApplaud pop singer taking final encore? (5)[-----]. pop singer = CHER, enclosing final "encore" = E
3D3DSteal books from heartless, idiotic stiff (7)[-------]. Steal = ROB; books = OT; heartless "idiotic" = IC
5D5DNo end to the benefit of this sticky stuff (3)[---]. No end to the benefit = remove last letter from GOOD
6D6DPhone up, when tuber's in the pink (5)[-----]. Phone = CALL, reversed (up), enclosing tuber = I
7D7DHangout for kids with friends in high places? (4, 5)[---------]. Cryptic def.
11D11DRefusing to dance? "Throw new shapes!" (7)[-------]. Anag. REFUSING, subtract new = N
13D13DReproduce Brahms's final piece (5)[-----]. Brahms's final = S; piece = PAWN
15D15DIt couldn't be better: my turn to split the pack (5)[-----]. My turn to split the deck = I DEAL
17D17DTuber turns up to cover late starter... "Got wood?" (3)[---]. Tuber = ME, reversed ("turns up"), enclosing "late" starter = L